GB/T 12459  弯头 DN 40-Ⅱ-345EL50

DN 40-Ⅱ-3 45EL50

SO 80-150 RF0S.650 RFnR50RJ-S=28RM SRFmpa2/u0080/u00a250RJb0040

PL80-16RF=155 f1/0 RFeC=1440 d3S-3

hha120 в•ЁГR0

wn32-2500rj/0RFв•Ёв”җО

SO50-150RFRF0/(aп▒Б┬≥Б∙

SO 20b-40 FM10.5 &;amp;a

PL20B-10FFT20=8/56

SO